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Ë And "Service" Are Displayed; Panel Locked" Is Displayed - Viessmann VITOCAL 150-A Operating Instructions For The System User

Heat pump control unit with 7" touch display
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What to do if...
and "Service" are displayed
ë
Cause
The time for a service as specified by your contractor
has arrived.

"Panel locked" is displayed

Cause
The control panel is locked.
50
Remedy
Proceed as described on page 42.
Remedy
Unlock it: See page 34.
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